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    <title>Getting and running Java</title>
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    <section class="sect1" title="Getting and running Java" epub:type="subchapter" id="Running-Java">
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            <h2 class="title" style="clear: both">Getting and running Java</h2>
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      <p>Before installing Kawa, you will need a working Java system.
The released Kawa jar file assumes Java 7 or newer.
You need to build Kawa from source if you have Java 5, Java 6,
or are targeting Android.
(Older versions of Kawa have been reported to
work with JDK from 1.1, Kaffe, Symantec Cafe, J++, and GCJ,
but these are no longer supported.)
</p>
      <p>The discussion below assumes you are using the Java Developer’s Kit
(JDK) from Oracle.  You can download free copies of
<a class="ulink" href="http://www.oracle.com/technetwork/java/javase/downloads/index.html" target="_top">JDK 8</a> for various platforms.
</p>
      <p>If you want to run Kawa on a Macintosh, see
<a class="ulink" href="http://rdsathene.org/scheme/mackawa.html" target="_top">http://rdsathene.org/scheme/mackawa.html</a>.
</p>
      <p>The program <code class="literal">java</code> is the Java interpreter.
The program <code class="literal">javac</code> is the Java compiler,
and is needed if you want to compile the source release yourself.
Both programs must be in your <code class="literal">PATH</code>.
If you have the JDK in directory <code class="literal">$JAVA_HOME</code>,
and you are using a Bourne-shell compatible shell
(/bin/sh, ksh, bash, and some others) you can set <code class="literal">PATH</code> thus:
</p>
      <pre class="screen">PATH=$JAVA_HOME/bin:$PATH
export PATH
</pre>
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